By virtue of your identification with Christ you have been restored unto right standing with God - Rom 5:17-18. You have been made righteous in Christ. As a result you have every right to approach and communicate with God without any sense of guilt or unworthiness - Heb 4:16.
You are a member of the body of Christ and a child of God. Just like an earthly child can boldly approach his/her parents you can do the same to your Heavenly Father. You can approach God with confidence daily and at any time of the day.
God is willing and able to release His power to bring about your favor and success (grace) but you must first approach Him with your requests. Don't let anyone deceive you about your right to stand boldly before God. He is a loving Father and you are His Child. God is committed to you - Jer 29:11.